package com.itheima.mapper;

import com.itheima.pojo.User;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

public interface UserMapper {

    /*
        根据用户名和密码查询用户对象
    * */
    @Select("select * from tb_user where username = #{username} and password = #{password}")
    User select(@Param("username") String username ,@Param("password") String password);

    //根据用户名查询用户对象
    @Select("select * from tb_user where username = #{username}")
    User selectByUsername(String username);

    //
    @Select("insert into tb_user values(null,#{username},#{password})")
    void add(User user);
}
